<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
登录界面<br>
<form action="user.servlet" method="post">
   用户名：<input type="text" name="userName"><br>
  密码：<input type="password" name="password"><br>
  <button type="submit">登录</button>  
</form>

</body>
</html>